400422401031321 has 24 divisors (see below), whose sum is σ = 580498998824160. Its totient is φ = 265974138654336.

The previous prime is 400422401031319. The next prime is 400422401031347. The reversal of 400422401031321 is 123130104224004.

400422401031321 is a `hidden beast` number, since 4 + 0 + 0 + 422 + 4 + 0 + 103 + 132 + 1 = 666.

It is not a de Polignac number, because 400422401031321 - 2¹ = 400422401031319 is a prime.

It is a super-2 number, since 2×400422401031321² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400422401031391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12861265 + ... + 31084673.

It is an arithmetic number, because the mean of its divisors is an integer number (24187458284340).

Almost surely, 2^{400422401031321} is an apocalyptic number.

It is an amenable number.

400422401031321 is a deficient number, since it is larger than the sum of its proper divisors (180076597792839).

400422401031321 is a wasteful number, since it uses less digits than its factorization.

400422401031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18232325 (or 18232322 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 400422401031321 its reverse (123130104224004), we get a palindrome (523552505255325).

The spelling of 400422401031321 in words is "four hundred trillion, four hundred twenty-two billion, four hundred one million, thirty-one thousand, three hundred twenty-one".